A clamping and positioning device for machining shaft parts

Abstract

The utility model relates to machining technical field, concretely provides a kind of clamping positioning device for shaft parts machining, including positioning module and clamping module, the positioning module is set on machine tool workstation, for positioning to clamping module;The clamping module includes multiple sets of clamping mechanism, base and tensioning mechanism, multiple sets The clamping mechanism is laid on base;The tensioning mechanism is set on base and is connected with clamping mechanism, for realizing the clamping and relaxation of clamping mechanism.The utility model in, by setting multiple sets of clamping mechanism, realize the batch clamping of multiple parts, reduce the operating frequency of part clamping, adjustment alignment, compacting etc.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a clamping and positioning device for machining shaft parts. Background Technology

[0002] In machining, the machining of the upper surface of shaft parts is often characterized by a small area to be machined and a short cutting time. Before machining shaft parts, they need to go through steps such as pre-clamping, adjustment and alignment, and clamping. This part accounts for a large proportion of the total machining time of the part. Moreover, the existing fixtures clamp one part at a time for machining, which means that when machining multiple parts, the pre-clamping, adjustment and alignment, and clamping steps need to be performed multiple times, which seriously affects the machining efficiency of the parts.

[0003] Based on the above, this utility model provides a clamping and positioning device for machining shaft-type parts, so as to solve the technical problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping and positioning device for machining shaft-type parts, and the specific technical solution is as follows: A clamping and positioning device for machining shaft parts includes a positioning module and a clamping module. The positioning module is disposed on the machine tool worktable and is used to position the clamping module. The clamping module includes multiple clamping mechanisms, a base, and a tensioning mechanism. The multiple clamping mechanisms are disposed on the base. The tensioning mechanism is disposed on the base and connected to the clamping mechanisms to realize the clamping and releasing of the clamping mechanisms.

[0005] Furthermore, the clamping mechanism includes multiple sets of movable clamping blocks and multiple sets of fixed clamping blocks, which are disposed opposite to each other on the mounting base plate, and a cavity for accommodating shaft-type parts is formed between the movable clamping blocks and the fixed clamping blocks; the mounting base plate is mounted on the base.

[0006] Furthermore, the mounting base plate is provided with a positioning boss, the length direction of which is perpendicular to the axial direction of the shaft part, for axial positioning of the shaft part.

[0007] Furthermore, the movable clamping block includes a clamping plate, a transition plate, and a lower pressure plate. The transition plate is provided in two sets, and the two sets of transition plates are symmetrically arranged on both sides of the lower pressure plate. The clamping plate is located on the side of the transition plate away from the lower pressure plate, and the clamping plate cooperates with the fixed clamping block to form a cavity for accommodating shaft-type parts. The lower pressure plate is a trapezoidal plate that is wider at the top and narrower at the bottom, and a cavity matching the lower pressure plate is formed between the two sets of transition plates; the lower pressure plate and the transition plate are slidably connected.

[0008] Furthermore, the clamping plate and the transition plate are detachably connected; the side of the clamping plate that contacts the shaft part is provided with a groove; when the shaft part is clamped, the shaft part engages with the groove.

[0009] Furthermore, the tensioning mechanism includes a pull rod, a pull plate, a screw, and a spring. One end of the pull rod passes through the mounting base plate and is connected to the lower pressure plate, while the other end of the pull rod is connected to the pull plate. One end of the screw is connected to the pull plate, and the other end of the screw passes through the base and is threadedly connected to the base. The spring is disposed between the pull plate and the base and is sleeved on the outer ring of the screw.

[0010] Furthermore, the tensioning mechanism includes a telescopic drive component, the fixed end of which is connected to the base, and the driving end of which passes through the mounting base plate and is connected to the lower pressure plate; the telescopic drive component is a cylinder or an electric push rod.

[0011] Furthermore, the clamping block is a rectangular block, and the contact surface between the rectangular block and the shaft-like part is perpendicular to the mounting base plate; the mounting base plate is a rectangular plate.

[0012] Furthermore, the positioning module includes at least two positioning blocks, with two adjacent positioning blocks symmetrically arranged on the machine tool worktable for positioning the clamping module.

[0013] Furthermore, the positioning block is L-shaped, including surface A1 and surface A2, with surface A1 and surface A2 being perpendicular to each other; the A1 surfaces of the two sets of positioning blocks are coplanar and parallel to the X-axis of the machine tool; the A2 surfaces of the two sets of positioning blocks are parallel to the Y-axis of the machine tool.

[0014] The application of the technical solution of this utility model has the following beneficial effects: (1) This utility model provides a clamping and positioning device for machining shaft-type parts, including a positioning module and a clamping module. The positioning module is set on the machine tool worktable and is used to position the clamping module. The clamping module includes multiple clamping mechanisms, a base and a tensioning mechanism. Multiple clamping mechanisms are set on the base. The tensioning mechanism is set on the base and connected to the clamping mechanisms to realize the clamping and loosening of the clamping mechanisms. In this utility model, by setting multiple clamping mechanisms, multiple parts can be clamped in batches, reducing the frequency of operation steps such as clamping, adjustment and alignment, and pressing, greatly reducing the proportion of this part in the entire machining time, realizing the efficiency improvement of part machining, and achieving the purpose of cost reduction and efficiency improvement.

[0015] (2) In this utility model, a positioning boss is provided on the mounting base plate. The length direction of the positioning boss is perpendicular to the axial direction of the shaft part, so as to realize the axial positioning of the shaft part.

[0016] (3) In this utility model, the clamping plate and the transition plate are detachably connected. Clamping plates of different shapes can be made according to the shape of the parts to realize the clamping of different parts and improve the applicability of the device.

[0017] (4) In this utility model, the side of the clamping plate that contacts the shaft part is provided with a groove; when the shaft part is clamped, the shaft part is engaged with the groove. The shape of the groove is preferably triangular or arc-shaped. The clamping plate cooperates with the fixed clamping block to achieve stable clamping of the part.

[0018] (5) In this utility model, the tensioning mechanism includes a pull rod, a pull plate, a screw, and a spring. One end of the pull rod passes through the mounting base plate and is connected to the lower pressure plate, and the other end of the pull rod is connected to the pull plate. One end of the screw is connected to the pull plate, and the other end of the screw passes through the base and is threadedly connected to the base. The spring is disposed between the pull plate and the base and is sleeved on the outer ring of the screw. The rotation of the screw realizes the downward pressing and upward movement of the lower pressure plate, thereby realizing the synchronous clamping of multiple parts and improving the clamping efficiency.

[0019] (6) In this utility model, the positioning module is arranged on the machine tool workbench and consists of two positioning blocks to realize the rapid positioning of the clamping module.

[0020] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the clamping and positioning device for machining shaft parts installed on the machine tool worktable in an embodiment of this utility model; Figure 2 This is a structural diagram of the positioning module; Figure 3 This is a structural diagram of the clamping module; Figure 4 This is a schematic diagram of the clamping mechanism; Figure 5 This is a schematic diagram of the moving clamp block; Figure 6 This is a schematic diagram of the tensioning mechanism; Among them, 1. Positioning module, 2. Clamping module, 2.1 Clamping mechanism, 2.1.1 Moving clamping block, 2.1.1.1 Clamping plate, 2.1.1.2 Transition plate, 2.1.1.3 Lower pressure plate, 2.1.2 Fixed clamping block, 2.1.3 Mounting base plate, 2.1.4 Positioning boss, 2.2 Base, 2.3 Tensioning mechanism, 2.3.1 Pull rod, 2.3.2 Pull plate, 2.3.3 Screw, 2.3.4 Spring, 3. Machine tool worktable, 4. Machine tool. Detailed Implementation

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Example 1 See Figure 1 This embodiment provides a clamping and positioning device for machining shaft-type parts, including a positioning module 1 and a clamping module 2. The positioning module 1 is disposed on the machine tool worktable 3 and is used to position the clamping module 2. The clamping module 2 is used to clamp the shaft-type parts. In this embodiment, two sets of clamping modules 2 are provided. When one set is used for machining on the machine tool 4, the other set clamps the parts offline at the same time. After the parts on the machine tool 4 are finished, the clamping module 2 with the parts clamped offline directly replaces the clamping module 2 with the parts clamped offline, realizing the rapid connection between the machining of two batches of parts, avoiding excessive downtime and waiting time, and improving work efficiency.

[0026] The positioning module 1 includes at least two sets of positioning blocks, with two adjacent sets of positioning blocks symmetrically arranged on the machine tool worktable 3, for positioning the clamping module 2; in this embodiment, two sets of positioning blocks are provided; see also Figure 2 The positioning block is L-shaped, including surface A1, surface A2, an upper surface, and a lower surface. Surfaces A1 and A2 are perpendicular to each other, and the upper and lower surfaces are parallel to each other. (See also...) Figure 1 Before using the device, first install the two sets of positioning blocks on the machine tool worktable 3, so that the lower surface of the positioning blocks is in contact with the machine tool worktable 3. During installation, use the machine tool 4 to calibrate the positioning blocks so that the A1 surfaces of the two sets of positioning blocks are coplanar and parallel to the X-axis of the machine tool 4; the A2 surfaces of the two sets of positioning blocks are parallel to the Y-axis of the machine tool 4. Preferably, the distance between the A2 surfaces of the two sets of positioning blocks is 1-2 mm larger than the length of the clamping module 2, so that the clamping module 2 can be smoothly attached to the positioning blocks.

[0027] See Figure 3 The clamping module 2 includes multiple clamping mechanisms 2.1, a base 2.2, and a tensioning mechanism 2.3. The multiple clamping mechanisms 2.1 are disposed on the base 2.2; the tensioning mechanism 2.3 is disposed on the base 2.2 and connected to the clamping mechanism 2.1, and is used to clamp and release the clamping mechanism 2.1.

[0028] See Figure 4 The clamping mechanism 2.1 includes multiple sets of movable clamping blocks 2.1.1 and multiple sets of fixed clamping blocks 2.1.2. The movable clamping blocks 2.1.1 and fixed clamping blocks 2.1.2 are arranged opposite to each other on the mounting base plate 2.1.3. A cavity for accommodating shaft parts is formed between the movable clamping blocks 2.1.1 and the fixed clamping blocks 2.1.2. The mounting base plate 2.1.3 is mounted on the base 2.2.

[0029] In this embodiment, the clamping block 2.1.2 is a rectangular block, and the contact surface between the rectangular block and the shaft-like part is perpendicular to the mounting base plate 2.1.3. When clamping the part, it can guide the part to be aligned so that the part's axis is parallel to the mounting base plate 2.1.3. The mounting base plate 2.1.3 is a rectangular plate. In this embodiment, the contact surface between the rectangular block and the shaft-like part is parallel to the width direction of the mounting base plate 2.1.3, and the part's axis is parallel to the width direction of the mounting base plate 2.1.3.

[0030] See Figure 5 The movable clamping block 2.1.1 includes a clamping plate 2.1.1.1, a transition plate 2.1.1.2, and a lower pressure plate 2.1.1.3. The transition plate 2.1.1.2 is provided in two sets, and the two sets of transition plates 2.1.1.2 are symmetrically arranged on both sides of the lower pressure plate 2.1.1.3. The clamping plate 2.1.1.1 is located on the side of the transition plate 2.1.1.2 away from the lower pressure plate 2.1.1.3. The clamping plate 2.1.1.1 and the fixed clamping block 2.1.2 cooperate to form a cavity for accommodating shaft-type parts.

[0031] In this embodiment, a set of movable clamping blocks 2.1.1 and two sets of fixed clamping blocks 2.1.2 can cooperate to clamp two shaft-like parts, and two sets of movable clamping blocks 2.1.1 and three sets of fixed clamping blocks 2.1.2 can cooperate to clamp four shaft-like parts. See also... Figure 4 The system employs a combination of two sets of movable clamping blocks 2.1.1 and three sets of fixed clamping blocks 2.1.2. The two sets of movable clamping blocks 2.1.1 and the three sets of fixed clamping blocks 2.1.2 are alternately arranged along the length of the mounting base plate 2.1.3 to clamp four shaft-type parts. Two rows of this combination are arranged side by side along the width of the mounting base plate 2.1.3 to clamp a total of eight shaft-type parts. Multiple sets of movable clamping blocks 2.1.1 and fixed clamping blocks 2.1.2 can be set according to actual production needs to achieve batch clamping of parts.

[0032] In this embodiment, a positioning boss 2.1.4 is provided on the mounting base plate 2.1.3 along the length direction. The length direction of the positioning boss 2.1.4 is perpendicular to the axial direction of the shaft part, and is used to realize the axial positioning of the shaft part.

[0033] In this embodiment, see Figure 5 The lower pressure plate 2.1.1.3 is a trapezoidal plate that is wider at the top and narrower at the bottom. The side of the transition plate 2.1.1.2 that contacts the lower pressure plate 2.1.1.3 is an inclined surface that matches the lower pressure plate 2.1.1.3. A cavity matching the lower pressure plate 2.1.1.3 is formed between the two sets of transition plates 2.1.1.2. The lower pressure plate 2.1.1.3 is disposed in the cavity and is slidably connected to the transition plate 2.1.1.2. When the lower pressure plate 2.1.1.3 presses down, it causes the transition plate 2.1.1.2 to move to the side, pressing the part between the fixed clamping block 2.1.2, the mounting base plate 2.1.3, and the clamping plate 2.1.1.1, thus achieving a stable clamping of the part.

[0034] In this embodiment, the clamping plate 2.1.1.1 and the transition plate 2.1.1.2 are detachably connected. Clamping plates 2.1.1.1 of different shapes can be manufactured according to the shape of the parts, enabling the clamping of different parts and improving the applicability of the device. Preferably, in this embodiment, the side of the clamping plate 2.1.1.1 that contacts the shaft-like parts is provided with a groove; when the shaft-like parts are clamped, the shaft-like parts are engaged with the groove; the shape of the groove is triangular or arc-shaped.

[0035] See Figure 6The tensioning mechanism 2.3 includes a pull rod 2.3.1, a pull plate 2.3.2, a screw 2.3.3, and a spring 2.3.4. One end of the pull rod 2.3.1 passes through the mounting base plate 2.1.3 and connects to the lower pressure plate 2.1.1.3, while the other end of the pull rod 2.3.1 connects to the pull plate 2.3.2. In this embodiment, multiple pull rods 2.3.1 are provided, each corresponding to one of the lower pressure plates 2.1.1.3. One pull plate 2.3.2 is provided, and multiple pull rods 2.3.1 are connected to the pull plate 2.3.2. One end of the screw 2.3.3 is connected to the pull plate 2.3.2, and the other end of the screw 2.3.3 passes through the base 2.2 and is threadedly connected to the base 2.2. The spring 2.3.4 is located between the pull plate 2.3.2 and the base 2.2 and is sleeved on the outer ring of the screw 2.3.3. See also Figure 6 Tightening the screw 2.3.3 from the base 2.2 downwards moves it downwards, causing the lower pressure plate 2.1.1.3 to press down and clamp the part (at this time, the spring 2.3.4 is in a compressed state). When the part needs to be removed after processing, tightening the screw 2.3.3 upwards moves it upwards. The compressed spring 2.3.4 rebounds, causing the lower pressure plate 2.1.1.3 to rise, thereby loosening the movable clamping block 2.1.1, and the part can then be removed between the movable clamping block 2.1.1 and the fixed clamping block 2.1.2. The tensioning mechanism 2.3 provided in this embodiment can clamp multiple parts simultaneously, improving the efficiency of clamping operations.

[0036] After the part is clamped, the clamping module 2 is hoisted onto the machine tool 4, aligning it with the positioning module 1 on the machine tool's worktable 3. A quick-pressing plate is used to clamp the clamping module 2, completing its positioning. The upper and lower planes of the clamping module 2 are precision-machined and parallel, ensuring the clamped part is perpendicular to the machine tool's Z-axis. The mounting base plate 2.1.3 in the clamping module 2 is pressed against the positioning module 1, making it parallel to the machine tool's Y-axis. Therefore, the clamped part's axis, parallel to the mounting base plate 2.1.3, is parallel to the machine tool's Y-axis. During the first machining operation, the part's machining coordinate system is set according to the mounting base plate 2.1.3, and the part's machining program is written. For subsequent machining operations, simply press the mounting base plate 2.1.3 against the positioning module 1, and the program can be directly called for machining. During the automatic machining process of parts by the machine tool 4, the second clamping module 2 clamps the parts. After the parts on the first clamping module 2 are finished, the first clamping module is lifted off the machine tool 4 and the second clamping module 2 is lifted on, so as to realize the rapid connection between the machining of two batches of parts.

[0037] Example 2 In this embodiment, the difference from Embodiment 1 is that the tensioning mechanism 2.3 includes a telescopic drive component. The fixed end of the telescopic drive component is connected to the base 2.2, and the driving end of the telescopic drive component passes through the mounting base plate 2.1.3 and connects to the lower pressure plate 2.1.1.3. The telescopic drive component is a cylinder or an electric push rod. When a clamping module 2 clamps too many parts, multiple tensioning mechanisms 2.3 are needed to clamp the parts. In this case, the tensioning mechanism 2.3 uses a cylinder or an electric push rod. The cylinder or electric push rod drives the lower pressure plate 2.1.1.3 to move, thereby achieving rapid clamping and loosening of the parts and improving clamping efficiency.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping and positioning device for machining shaft-type parts, characterized in that, It includes a positioning module (1) and a clamping module (2). The positioning module (1) is set on the machine tool worktable (3) and is used to position the clamping module (2). The clamping module (2) includes multiple clamping mechanisms (2.1), a base (2.2), and a tensioning mechanism (2.3). The multiple clamping mechanisms (2.1) are disposed on the base (2.2); the tensioning mechanism (2.3) is disposed on the base (2.2) and connected to the clamping mechanism (2.1) to realize the clamping and releasing of the clamping mechanism (2.1).

2. The clamping and positioning device for machining shaft-type parts according to claim 1, characterized in that, The clamping mechanism (2.1) includes multiple sets of movable clamping blocks (2.1.1) and multiple sets of fixed clamping blocks (2.1.2). The movable clamping blocks (2.1.1) and fixed clamping blocks (2.1.2) are arranged opposite to each other on the mounting base plate (2.1.3). A cavity for accommodating shaft parts is formed between the movable clamping blocks (2.1.1) and the fixed clamping blocks (2.1.2). The mounting base plate (2.1.3) is mounted on the base (2.2).

3. A clamping and positioning device for machining shaft-type parts according to claim 2, characterized in that, The mounting base plate (2.1.3) is provided with a positioning boss (2.1.4), the length direction of which is perpendicular to the axial direction of the shaft part, and is used to realize the axial positioning of the shaft part.

4. A clamping and positioning device for machining shaft-type parts according to claim 2, characterized in that, The movable clamping block (2.1.1) includes a clamping plate (2.1.1.1), a transition plate (2.1.1.2), and a lower pressure plate (2.1.1.2). 2.1.1.3), the transition plate (2.1.1.2) is provided in two sets, and the two sets of transition plates (2.1.1.2) are symmetrically arranged on both sides of the lower pressure plate (2.1.1.3); the clamping plate (2.1.1.1) is located on the transition plate (2.1.1.2) away from the lower pressure plate (2.1.1.3). On one side of 2.1.1.3), the clamping plate (2.1.1.1) and the fixed clamping block (2.1.2) cooperate to form a cavity for accommodating shaft-type parts; The lower pressure plate (2.1.1.3) is a trapezoidal plate that is wider at the top and narrower at the bottom. A cavity matching the lower pressure plate (2.1.1.3) is formed between the two sets of transition plates (2.1.1.2). The lower pressure plate (2.1.1.3) and the transition plate (2.1.1.2) are slidably connected.

5. A clamping and positioning device for machining shaft-type parts according to claim 4, characterized in that, The clamping plate (2.1.1.1) and the transition plate (2.1.1.2) are detachably connected; the side of the clamping plate (2.1.1.1) that contacts the shaft part is provided with a groove; when the shaft part is clamped, the shaft part is engaged with the groove.

6. A clamping and positioning device for machining shaft-type parts according to claim 4, characterized in that, The tensioning mechanism (2.3) includes a pull rod (2.3.1), a pull plate (2.3.2), a screw (2.3.3), and a spring (2.3.4). One end of the pull rod (2.3.1) passes through the mounting base plate (2.1.3) and is connected to the lower pressure plate (2.1.1.3). The other end of the pull rod (2.3.1) is connected to the pull plate (2.3.2). One end of the screw (2.3.3) is connected to the pull plate (2.3.2), and the other end of the screw (2.3.3) passes through the base (2.2) and is threadedly connected to the base (2.2). The spring (2.3.4) is located between the pull plate (2.3.2) and the base (2.2) and is sleeved on the outer ring of the screw (2.3.3).

7. A clamping and positioning device for machining shaft parts according to claim 4, characterized in that, The tensioning mechanism (2.3) includes a telescopic drive component, the fixed end of which is connected to the base (2.2), and the drive end of which passes through the mounting base plate. 2.1.3) is connected to the lower pressure plate (2.1.1.3); the telescopic drive component adopts a cylinder or an electric push rod.

8. A clamping and positioning device for machining shaft parts according to claim 2, characterized in that, The clamping block (2.1.2) is a rectangular block, and the contact surface between the rectangular block and the shaft part is perpendicular to the mounting base plate (2.1.3); the mounting base plate (2.1.3) is a rectangular plate.

9. A clamping and positioning device for machining shaft-type parts according to any one of claims 1-8, characterized in that, The positioning module (1) includes at least two positioning blocks, with two adjacent positioning blocks symmetrically arranged on the machine tool worktable (3) for positioning the clamping module (2).

10. A clamping and positioning device for machining shaft parts according to claim 9, characterized in that, The positioning block is L-shaped, including surface A1 and surface A2, with surface A1 and surface A2 set perpendicular to each other; the A1 surfaces of the two positioning blocks are coplanar and parallel to the X-axis of the machine tool (4); the A2 surfaces of the two positioning blocks are parallel to the Y-axis of the machine tool (4).

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